diff -ru3 a/jdk/src/share/classes/javax/swing/UIManager.java b/jdk/src/share/classes/javax/swing/UIManager.java
--- a/jdk/src/share/classes/javax/swing/UIManager.java	2016-07-26 00:41:37.000000000 +0300
+++ b/jdk/src/share/classes/javax/swing/UIManager.java	2016-10-02 22:46:01.890071761 +0300
@@ -607,11 +607,9 @@
         if (osType == OSInfo.OSType.WINDOWS) {
             return "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
         } else {
-            String desktop = AccessController.doPrivileged(new GetPropertyAction("sun.desktop"));
             Toolkit toolkit = Toolkit.getDefaultToolkit();
-            if ("gnome".equals(desktop) &&
-                    toolkit instanceof SunToolkit &&
-                    ((SunToolkit) toolkit).isNativeGTKAvailable()) {
+            if (toolkit instanceof SunToolkit &&
+                    ((SunToolkit) toolkit).isNativeGTKAvailable()) {
                 // May be set on Linux and Solaris boxs.
                 return "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
             }
@@ -1341,7 +1339,7 @@
             lafName = (String) lafData.remove("defaultlaf");
         }
         if (lafName == null) {
-            lafName = getCrossPlatformLookAndFeelClassName();
+            lafName = getSystemLookAndFeelClassName();
         }
         lafName = swingProps.getProperty(defaultLAFKey, lafName);